Blasting-cartridge



(No Model.)

. J. S. WELCH 8v L. M. MOLENDON.

J. P. TODD BLASTING CARTRIDGE.

Patented July 2, 1889.

' ana e/z dam qwwmooeo UNITED STATES JAMES POLK TODD, JOHN STEEL WELOH, AND LUCIAN MASON MCLENDON, OE CHATFIELD, TEXAS.

BLASTING- SPECIFICATION forming part of Letters Patent No. 406,154, dated July 2, 1889.

Application filed July 14, 1888.

To all whom it may concern.-

Be it known that we, JAMES POLK TODD, JOHN STEEL WELcH, and LUCIAN MAsoN Mc- LENDON, citizens of the United States, residing at Chatfield, in the county of Navarro and State of Texas, have invented new and useful Improvements in Blasting-Cartridges, of which the following is a specification.

The invention relates to improvements in [o blasting-cartridges, the objects being to prevent the shell of the cartridge from flying out of the bore when exploded and to cause the cartridge to expand itself in a large degree laterally; and it consists in the construction and novel combination of parts hereinafter described, illustrated in, the accompanying drawings, and pointed outin the appended claims.

In the drawings, Figure 1 is a perspective View of a blasting-cartridge embodying our invention. Fig. 2 is aface view of one of the sections of the cartridge. Fig. is the car'- 0 tridge in place in a recess or bore in a stump of a tree.

Referring to the drawings by letter, A designates ablasting-cartridge, preferably of malleable iron, and composed of two similar and equal longitudinal sections a a, each semicircular in cross-section, and together forming the cartridge-tube. The recess or hollow a in the shell increases in diameter from its outer to its inner end, so that no shoulders that might produce irregular fracture when the shell is exploded are formed therein. This construction of the recess will also tend to force the front ends of the sections laterally outward, and consequently increase the disrupting force of the cartridge.

B is the tamp at the outer end of the cartridge, and b is the fuse-opening, the fuse extending centrally through said opening to the charge 0 within. The fuse c is of any desired construction.

D, Fig. 3, is a stump of a tree, into a bore d in which the cartridge is inserted. The outer or front end of each section a of the cartridge is provided with the teeth E on its outer surface, which teeth are arranged in Serial No. 279,931. (No model.)

ally and the teeth E will be embeddedin the rock or wood that is disrupted, the shoulders F preventing the sections a of the cartridge from being blown outward by the explosion.

\Ve are aware of the patent to Holsey, No. 140,628, dated July 8, 1873, and we disclaim the construction shown in said patent.

By making the adjacent faces of the semishells smooth and flat fortheir entire lengths, the said shells will easily separate when the blast takes place, and the fuse-opening will at no time become closed, which would give the shell a tendency to fly in an upward and outward direction, whereby much of the force of the blast, which should be entirely in a lateral 7 5 direction, would be lost. Furthermore, by placing the exterior spurs or projections at the front end of the shell only, the cartridge may be withdrawn after being partially inserted in the drill hole or opening if a false start should be made in so inserting it, which could notwell be done if the said teeth or spurs were extended over the entire length of the cartridge. At the same time they will be found amply sufficient for the purpose for which they are intendedviz., retaining the shell or cartridge in position in the opening prepared for its reception. The semi-shells composing our improved cartridge are not liable to become warped or misshapen by re-. 0 peated use, inasmuch as they will readily part or separate when the blast takes place.

Having described our invention, we claim A blasting-cartridge composed of two similar semi-cylindrical sections having flat smooth faces their entire length, adapted to rest or bear against each other and grooved to form the cylindrical fuse-opening, and the sections a will be separated and driven later- 60 bore tapering from said fuse-opening to the our own We have hereto affixed our signatures IO bottom or innerend of the shell, said semiin presence of two witnesses.

shells bein provided on their outer sides 1 and at thei? front ends for a portion of their len ths only with sharp-pointed spurs or proiieetions having vertical front Walls and LUCIAN MASON MCLENDON' sharp inclined rear edges, substantially as WVitnesses.

and for the purpose set forth. H. F. FARRER,

In testimony that we claim the foregoing as J P. FARRER. 

